EP 0754732 B1 20010816 - Azo dyes, process for their preparation and use thereof
Title (en)
Azo dyes, process for their preparation and use thereof
Title (de)
Azofarbstoffe, Verfahren zu deren Herstellung und deren Verwendung
Title (fr)
Colorants azoiques, procédé pour leur préparation et leur utilisation
Publication
Application
Priority
CH 215995 A 19950721
Abstract (en)
[origin: EP0754732A1] Disazo dyes of formula (I) are new; in which R1, R2 = 1-4 C alkyl or 1-4 C alkoxy, opt. substd. by OH, 1-4 C alkoxy or halogen; phenyl or phenoxy, opt. substd. by 1-4 C alkyl, 1-4 C alkoxy or halogen; or -N(R3)R4; R3, R4 = H; 1-4 C alkyl; or 2-4 C alkanoyl, opt. substd. by OH or 1-4 C alkoxy; with the proviso that not both R1 and R2 = Me. Also claimed is the prepn. of (I) by diazotising an aminoazobenzenesulphonic acid of formula (II), coupling with a coupling component of formula (III) and reacting the prod. with a gp. introducing the -C(O)-R1 gp..
IPC 1-7
IPC 8 full level
C09B 31/047 (2006.01); C09B 43/128 (2006.01); D06P 3/24 (2006.01)
CPC (source: EP KR US)
C09B 31/047 (2013.01 - EP KR US); C09B 43/128 (2013.01 - EP KR US); D06P 3/24 (2013.01 - KR); D06P 3/60 (2013.01 - KR); Y10S 8/924 (2013.01 - US)
Designated contracting state (EPC)
BE CH DE DK ES FR GB IT LI NL
DOCDB simple family (publication)
EP 0754732 A1 19970122; EP 0754732 B1 20010816; CA 2181663 A1 19970122; CN 1070894 C 20010912; CN 1145933 A 19970326; DE 59607487 D1 20010920; JP H0931347 A 19970204; KR 970006409 A 19970219; TW 415960 B 20001221; US 5691459 A 19971125
DOCDB simple family (application)
EP 96810457 A 19960712; CA 2181663 A 19960719; CN 96110678 A 19960719; DE 59607487 T 19960712; JP 18711296 A 19960717; KR 19960029767 A 19960720; TW 85107974 A 19960702; US 67978596 A 19960715